Portable clamp.



No. 678,043. Patented July 9, 19m. J. A. SCOTT, n. WARREN & H. w. ASH.PORTABLE CLAMP.

(Application filed Jan. 21, 1901.)

(No Modsl.)

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UNITED STATES X PATENT OFFICE.

' JAMES ALBERT sooTT, OF BOSTON, R LPH L. WARREN, OF NEwToN, AND HORACEw-. ASH, OF CAMBRIDGE, MASSACHUSETTS, AssIeNoRs To WARREN BROTHERSCOMPANY, or BOSTON, MASSACHUSETTS.

PORTABLE CLAMP.

SPECIFICATION forming part of Letters Patent No. 678,043, dated July 9,1901.

Application filed January 21, 1901 Serial No. 44,066- (No model.) 7

To all whom it may concern.- Be it known that we,J AMEs ALBERT SooTT,residing at Boston,in the count of Sufiolk, RALPH L. WARREN, residing atewton, and HORACE W. ASH, residing at Oambridge,-in

the county of Middlesex, in the State of Massachusetts, citizens of theUnited States, have invented a new and useful Improvement in PortableClamps; and we do hereby declare 10 that the following is a full, clear,and exact description, reference being had to the accom panyingdrawings, forming a part of this specification, in explaining itsnature.

.The invention relates to a portable means or device for holding a metalor other guard for any work made of artificial stone, concrete, orsimilar plastic material, like curbs,

steps, &c., and during the construction or 3 'j'ustable horizontallytoward and from the erection thereof and in such a manner that theconcrete or other material may be placed and manipulated around or aboutthe guard and without being disturbed by the guard grading and holdingmeans.

The invention comprises supports in the :5 nature of posts which aredriven into-the earth or otherwise supported outside the line of thecurb, step, or other work and upon each of which is mounted to projecthorizontally therefrom a clamp of peculiar construction for holding themetal or other guard, and

this clamp is universally adjustable with respect to the post orsupport, in that it is both vertically and horizontally adjustable uponthe same. Any suitable means may be used for this purpose, and we haveillustrated a system of screws, collars, and set-nuts as one means ofcarrying the invention into effect.

We will now describe the invention in conjunction with the drawings,wherein-- portion of a completed curb, representing also in section thecurb-guard and showing in elevation the guard grading and holdingdevice. Fig. 2 is a view in plan thereof.

5 Referring to the drawings, D is a post, preferably of metal, in thenature of a stake, in that it has a pointed lower end and an exposedupper end for receiving blows of a hammer or mallet. It is provided witha screwthread 01 of any desired length, and it is Figure 1 is a view invertical section of a.

adapted to be driven into the earth outside the curb and at therequisite distance from it. Generallya number of posts are arranged inline. Upon the post is a collar or head 0, which has a hole slightlylarger than the size of the post, so that it may slip up and down uponit, audit is moved upon the post or is permitted to be moved thereon andis located in any desired position thereto by means of the set-nuts Z,one above it and one below it,

and which screw upon the threaded section of the'post. The head orcollar 0 has a lateral extension 'inwhich is a horizontal hole 0 of asize to receive the shank a of the'clamp.

. The shank has a threaded section a, upon which are the set-nuts K, oneon each side of the extension 0. Byloosening, the nuts the clamp-shankand clamp are movable or ad post, and by tightening the nuts the clamp-7o shank and clamp are located in their adjusted position. At the outerend of the clamp shank is a clamp for holding the metal or other guards, a metal guard being shown. It is preferably made of iron or steel,and it is composed of the part g, which is fast to the shank, and has atits outer end a downward extension g, provided at its lower end with anupward-extending lip 9 the lip form-- ing a rest for the lower edge ofthe guard e and the face 'i forming a gage against which the face of theguard adjacent to its lower edge may come into contact. I) is the othermember of the clamp. It is attached to the member 9 by a headed bolt m,which passes through holes in both, and has the look-nut m, which servesto clamp and lock the part b to the part g. Its inner end b rests uponthe part g, its outer end extends upward and furnishes the face 12*, andits downward-bent 0 end the lip b gwhich closes behind'the upper edge ofthe guard e, while the face 6 acts as a bed for receiving a large partof the outer face of the guard, which is held with some force against itand the face v by the lips I) 5 and g of the clamp when the two parts ofthe clamp are locked forcibly together. It will be seen that the clampis at the extreme end of its shank and removedv from its supporting-postand that it is shaped to support and hold the guard principally by thesurface of the guard which will be exposed after the curbing iscompleted and so that the part of the guard which is inclosed by theconcrete or other plastic material of which the curb is to beconstructed is held isolated from all other supports and in a manner notto interfere with the placing or manipulating or working of the concreteor plastic material in the formation of the curb and about such portionsof the guard only. Portions of the narrow lips 11 g of the clamp are ina position between any part of the guard and the concrete, and one orboth of these may be removed before all the concrete has been placedabout the guard. The clamp is constructed so that its upper portion maybe removed from the lower portion before the placing of the final bodyof concrete against the back of the guard, and thus continuing thefinish of the upper surface of the curb to the edge of the guard,

The device may be adjusted to gage the accurate position of the guardbefore the guard has been clamped to it. This becomes possible by makingthe face g of the clamp member g parallel to the axis of its shank a andby using therewith straight-edges, levels, or Ts for locating it,allowance being made for the shape and height of the guard. Itshorizontal position is controlled by means of the nuts 7t 7c. The guardmay then be placed upon the lower lip of the clamp, the upper member ofthe clamp adjusted upon it and bolted to the lower member, and the guardwill then be held with its outer surface, upper and lower corners, andits inward-extending web in the position which they should bear to theedge of the curb when built up and completed, and the construction beingrigid the guard is held in position without danger of displacement byknocks or jars during the construction of the work.

It will be seen that the guard is firmly held in place independently ofthe concrete, facing-boards, or any other support than the posts andthat the facing-boards may be removed from the face of the work beforethe final set of the concrete has taken place, which permits the face ofthe curb to be immediately troweled to a finish. This is an advantage ascompared with the old method of holding the guard,which required thatthe concrete must set hard before the facingboards could be removed andwhich then required to be finished by plastering instead of cementtroweling, the more desirable finish. It will also be seen that theclamp-arm and clamp may be turned upon the supporting post or standardto any required extent.

Having thus fully described our invention, we claim and desire to secureby Letters Patent of the United States 1. A portable device for holdingand gaging a guard for concrete curbs, steps or other similar concretework, comprising a standard or post, a horizontal clamp arm or shankmounted upon the standard or post to be vertically adjustable thereonand also to be horizontally movable with respect to it, and aguard-holding clamp at the end of said horizontal clamp arm or shank.

2. In a device for holding a guard for a concrete curb, steps or othersimilar concrete work during its construction, consisting of posts orstandards set away from the front line of the curb, step or otherconcrete work to be constructed, an arm extending horizontally from eachof said posts toward the line of said curb, step or work, and aguardholding clamp at the end of said arm for holding the guard duringthe construction of the curb, step or other work, and which device isremovable from the front of said step, curb or other work to permit itto be immediately finished, before it is set, by troweling.

3. A device for holding a guard for a concrete curb, step or other workduring its con struction, having a post or standard, a horizontal shankvertically movable upon the post and also horizontally movable withrespect thereto and a clamp carried by said arm, the clamp having ahorizontal face and vertical face 2'- by means of which it may be set tothe line of the guard before the guard is placed in the clamp. v

4. In a device for holding a guard for a concrete curb, step or otherwork, a clamp for holding the guard during the construction of the curb,step or other work having a lower member provided with a rest for theguard and a removable upper member having a seat and hook for the guard,and means for clamping the two members together whereby the lower membermay continue to act as a support for the guard after the concrete of thecurb or step has been combined with it but before the final finishing ofits upper surface and adjustable supporting means whereby said device isupheld and may be adjusted both vertically and horizontally.

5. In a device of the character specified, the combination of the posthaving the threaded section cl, a collar or head mounted upon the postto be movable thereon and having an extension at one side provided witha horizontal hole, nuts for adjusting the clamp upon the post andlooking it in any desired position, a threaded shank extending throughthe horizontal hole in the collar or head, nuts for locking itin anadjusted position to the collar or head and a guard-holding clamp at theouter end of said horizontal shank.

6. In a device of the character specified,

the adjustable shank at having at its outer end the integral member of aclamp provided with a face 11 and a rest g and also with a removablesection of a clamp having the face b the hook 19 the foot I) and a boltor nut for locking the two clamp members together,

the upper clamp member extending beyond zontal plane with regard to it,and a guard- 10 the free end of the lower clamp member, as clamp carriedby said horizontal arm or and for the purposes set forth. shank.

7. The combination in a device of the charr J. ALBERT SCOTT. acterspecified of a standard or post, a hori- RALPH L. WARREN. zontal shankor arm mounted thereon to be HORACE W. ASH. vertically adjustable inrelation thereto and In presence ofalso to be horizontally adjustablewith respect ALBERT G. WARREN,

to it and further to be movable upon a hori- LAURA A. DAGGETT.

